[Error Code] f56-11 on konica 7235

[CBE]

After replacing the controller board an error F56-11 Appeared after swicthing the machine on. Any idea how to reset the code.
Thanks

[dallas]

E56-11?
Machine type judgement abnormality. The type information of the SCB (System control board) is different from the type information of the CB (Main body control board).
If so, maybe ... reset by build in the right board.

[CBE]

Thank you Dallas, the controller board is a common board for the 7222, 7228 and the 7235. the system board is still the same board as it was when the fault occured on the controller board. Is there a firm upgrade which I can download to fix the problem? Thank you.